Initial sanitized SmartSpeaker snapshot

2026-07-13 21:13:19 -07:00
commit ac26dcc238
66 changed files with 11438 additions and 0 deletions
@@ -0,0 +1,174 @@
+#include <string.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/event_groups.h"
+#include "esp_system.h"
+#include "esp_wifi.h"
+#include "esp_event.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+#include "esp_netif_sntp.h"
+
+#include "wifi_connect.h"
+#include "wifi_credentials.h"
+#include "audio_driver.h"
+
+#define ESP_MAXIMUM_RETRY  5
+
+/* FreeRTOS event group to signal when we are connected */
+static EventGroupHandle_t s_wifi_event_group;
+
+/* The event group allows multiple bits for each event, but we only care about two events:
+ * - we are connected to the AP with an IP
+ * - we failed to connect after the maximum amount of retries */
+#define WIFI_CONNECTED_BIT BIT0
+#define WIFI_FAIL_BIT      BIT1
+
+static const char *TAG = "wifi station";
+
+static bool s_was_connected = false;
+static bool s_first_time_connect = true;
+
+static void event_handler(void* arg, esp_event_base_t event_base,
+                                int32_t event_id, void* event_data)
+{
+    if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
+        esp_wifi_connect();
+    } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
+        xEventGroupClearBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+        xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
+        ESP_LOGI(TAG, "Disconnected from AP");
+    } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
+        ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
+        ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
+        xEventGroupClearBits(s_wifi_event_group, WIFI_FAIL_BIT);
+        xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
+    }
+}
+
+static void init_sntp(void)
+{
+    ESP_LOGI("SNTP", "Initializing SNTP...");
+    esp_sntp_config_t config = ESP_NETIF_SNTP_DEFAULT_CONFIG("pool.ntp.org");
+    ESP_ERROR_CHECK(esp_netif_sntp_init(&config));
+}
+
+static void wifi_manager_task(void *pvParameters)
+{
+    while (1) {
+        EventBits_t bits = xEventGroupGetBits(s_wifi_event_group);
+        if (!(bits & WIFI_CONNECTED_BIT)) {
+            // We are not connected!
+            if (s_was_connected) {
+                // We lost connection!
+                ESP_LOGW(TAG, "Wi-Fi connection lost! Playing alert...");
+                set_led_state(LED_STATE_WIFI_CONNECTING);
+                Audio_Play_Music_To_End("file://spiffs/disconnected_wifi.mp3");
+                s_was_connected = false;
+            }
+
+            int retry_count = 0;
+            bool success = false;
+            while (retry_count < ESP_MAXIMUM_RETRY) {
+                ESP_LOGI(TAG, "Attempting Wi-Fi connection (try %d/%d)...", retry_count + 1, ESP_MAXIMUM_RETRY);
+                set_led_state(LED_STATE_WIFI_CONNECTING);
+                xEventGroupClearBits(s_wifi_event_group, WIFI_FAIL_BIT);
+                esp_wifi_connect();
+
+                // Wait up to 6 seconds for connection bit
+                bits = xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_BIT, pdFALSE, pdFALSE, pdMS_TO_TICKS(6000));
+                if (bits & WIFI_CONNECTED_BIT) {
+                    success = true;
+                    break;
+                }
+                retry_count++;
+            }
+
+            if (success) {
+                ESP_LOGI(TAG, "Wi-Fi Connected successfully.");
+                s_was_connected = true;
+                set_led_state(LED_STATE_SERVER_CONNECTING);
+                
+                // Play connected audio prompt
+                Audio_Play_Music_To_End("file://spiffs/connected_wifi.mp3");
+                s_first_time_connect = false;
+            } else {
+                ESP_LOGW(TAG, "Wi-Fi connection failed. Retrying in 10 seconds...");
+                set_led_state(LED_STATE_WIFI_FAILED);
+                
+                // Play "Still not working, let me try again in a moment"
+                Audio_Play_Music_To_End("file://spiffs/retry_later.mp3");
+                
+                // Wait 10 seconds before next connection attempt
+                vTaskDelay(pdMS_TO_TICKS(10000));
+                
+                // Play "Connecting to the Wi-Fi" chime before retrying
+                Audio_Play_Music_To_End("file://spiffs/connecting_wifi.mp3");
+            }
+        } else {
+            // Already connected! Keep monitoring
+            vTaskDelay(pdMS_TO_TICKS(1000));
+        }
+    }
+}
+
+bool wifi_is_connected(void)
+{
+    if (s_wifi_event_group == NULL) return false;
+    EventBits_t bits = xEventGroupGetBits(s_wifi_event_group);
+    return (bits & WIFI_CONNECTED_BIT) != 0;
+}
+
+esp_err_t wifi_init_sta(void)
+{
+    s_wifi_event_group = xEventGroupCreate();
+
+    ESP_ERROR_CHECK(esp_netif_init());
+
+    // Only create event loop if it hasn't been created yet
+    esp_err_t err = esp_event_loop_create_default();
+    if (err != ESP_OK && err != ESP_ERR_INVALID_STATE) {
+        ESP_ERROR_CHECK(err);
+    }
+
+    esp_netif_create_default_wifi_sta();
+
+    // Initialize SNTP exactly once during startup
+    init_sntp();
+
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    ESP_ERROR_CHECK(esp_wifi_init(&cfg));
+
+    esp_event_handler_instance_t instance_any_id;
+    esp_event_handler_instance_t instance_got_ip;
+    ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
+                                                        ESP_EVENT_ANY_ID,
+                                                        &event_handler,
+                                                        NULL,
+                                                        &instance_any_id));
+    ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
+                                                        IP_EVENT_STA_GOT_IP,
+                                                        &event_handler,
+                                                        NULL,
+                                                        &instance_got_ip));
+
+    wifi_config_t wifi_config = {
+        .sta = {
+            .ssid = WIFI_SSID,
+            .password = WIFI_PASSWORD,
+            .threshold.authmode = WIFI_AUTH_WPA2_PSK,
+        },
+    };
+    ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
+    ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
+    ESP_ERROR_CHECK(esp_wifi_start() );
+
+    ESP_LOGI(TAG, "Starting Wi-Fi manager task...");
+    xTaskCreate(wifi_manager_task, "wifi_manager_task", 4096, NULL, 5, NULL);
+
+    // Wait blockingly on first boot for initial connection
+    ESP_LOGI(TAG, "Waiting for initial Wi-Fi connection...");
+    xEventGroupWaitBits(s_wifi_event_group, WIFI_CONNECTED_BIT, pdFALSE, pdFALSE, portMAX_DELAY);
+
+    return ESP_OK;
+}